SOIL CONTAMINATION DUE TO CR, CD AND PB AT THE UPSTREAM AND DOWNSTREAM STRETCH OF YAMUNA RIVER IN DELHI, INDIA

The soil samples were collected from the periphery of the Yamuna River to study the exposure levels at Delhi stretch of the Yamuna River to judge the limit up to which these heavy metals contaminated and permeated into the soil. These samples were collected from two different locations, at every 5 meters between two barrages (Wazirabad Barrage and Okhla Barrage) of the river and then analyzed using Atomic Absorption Spectrophotometer (Flame) by Analytik Jena. The average load on soil due to Cd, Cr and Pb is 7.0925 mgkg-1, 127.525 mgkg-1 and 23.5325 mg kg- 1 at Wazirabad Barrage respectively. And the average load on soil due to Cd, Cr, and Pb is 19.355 mgkg-1, 104.45 mgkg-1, and 32.63 mgkg-1 at Okhla Barrage respectively which unveiled that the amount of heavy metal which is permeated into the soil has been significantly contaminated by the toxic elements at both Wazirabad Barrage and Okhla Barrage, the concentration of heavy metals is higher than the maximum contaminant level corresponding to threshold and guideline value for heavy metals in soil. In order to ameliorate the quality of soil, mitigation plan should be prepared by the provident government bodies to compel from these toxic metals.

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